package org.iweb.web.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MainFilter implements Filter {

	private static Logger log = LoggerFactory.getLogger(MainFilter.class);

	private String staticRegExp;

	@Override
	public void destroy() {

	}

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {

		HttpServletRequest request = (HttpServletRequest) arg0;
		HttpServletResponse response = (HttpServletResponse) arg1;

		if (request.getRequestURI().matches(staticRegExp)) {
			arg2.doFilter(arg0, arg1);
			return;
		}

		response.getWriter().write("OK");
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		staticRegExp = arg0.getInitParameter("staticRegExp");
	}

}
